Catalyst for oxidative dehydrogenation, method of preparing catalyst, and method of performing oxidative dehydrogenation using catalyst

Abstract

Provided is a catalyst for oxidative dehydrogenation, a method of preparing the catalyst, and a method of performing oxidative dehydrogenation using the catalyst. The catalyst for oxidative dehydrogenation has improved durability and fillability by including a porous support coated with a metal oxide (AB 2 O 4 ) according to Equation 1: X wt %+ Y wt %=100 wt %,  <Equation 1> wherein X is a content of AB 2 O 4 and is 5 or more and less than 30, and Y is a content of the porous support and is more than 70 and 95 or less, wherein the metal oxide exhibits activity during oxidative dehydrogenation. Therefore, when the catalyst is used in oxidative dehydrogenation of butene, the conversion rate of butene and the selectivity and yield of butadiene may be greatly improved.

The invention claimed is: 
     
       1. A catalyst for oxidative dehydrogenation comprising a porous support coated with a metal oxide AB 2 O 4  as an active ingredient for oxidative dehydrogenation, wherein:
 A is one or more metals selected from the group consisting of copper (Cu), radium (Ra), barium (Ba), strontium (Sr), calcium (Ca), beryllium (Be), zinc (Zn), magnesium (Mg), manganese (Mn), and cobalt (Co); 
 B is iron (Fe); and 
 the catalyst has a composition satisfying Equation 1 below:
     X  wt %+ Y  wt %=100 wt %,  <Equation 1>
 
 
 wherein X is a content of AB 2 O 4  and is 5 or more and less than 30, and Y is a content of the porous support and is more than 70 and 95 or less, and 
 wherein the porous support has an average pore size of 50 to 200 μm. 
 
     
     
       2. The catalyst according to  claim 1 , wherein the AB 2 O 4  is a zinc ferrite catalyst, wherein A is zinc (Zn), and B is iron (Fe). 
     
     
       3. The catalyst according to  claim 1 , wherein the AB 2 O 4  has an average particle diameter of 250 μm or less. 
     
     
       4. The catalyst according to  claim 1 , wherein the porous support has an average particle diameter of 3 mm or more, and is in a form of a sphere, pellet, or hollow bar. 
     
     
       5. The catalyst according to  claim 1 , wherein the porous support is one or more selected from the group consisting of alumina, silica, and zirconia. 
     
     
       6. The catalyst according to  claim 1 , wherein the porous support has a packing density of 0.4 to 3 g/cm 3 . 
     
     
       7. The catalyst according to  claim 1 , wherein the catalyst further comprises one or more binders selected from among aluminum-silicate, methylcellulose, and hydroxypropyl methylcellulose. 
     
     
       8. The catalyst according to  claim 1 , wherein the catalyst is a binder-free catalyst. 
     
     
       9. The catalyst according to  claim 1 , wherein the AB 2 O 4  has an average particle diameter of 0.1 to 75 μm.